diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 6da302d46145e37e974ec1ecacbce9796f64d59c..8fc4822c78834da96b423c7051d704dfb6b0fdcd 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1783,10 +1783,12 @@ struct v4l2_pix_format_mplane {
 /**
  * struct v4l2_sdr_format - SDR format definition
  * @pixelformat:	little endian four character code (fourcc)
+ * @buffersize:		maximum size in bytes required for data
  */
 struct v4l2_sdr_format {
 	__u32				pixelformat;
-	__u8				reserved[28];
+	__u32				buffersize;
+	__u8				reserved[24];
 } __attribute__ ((packed));
 
 /**